JPH09326271A - Multistage connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent insertion errors of a terminal extracting jig, and prevent damages on terminals by staggering the tip sides of respective stages by step, and arranging terminal extracting jig inserting holes in these dislocated surfaces. SOLUTION: This multistage connector is formed as a structure that terminal inserting holes 3 having lances 2 to lock terminals 1 inside are formed in two stages A and B in the vertical direction. The plural terminal inserting holes 3 are continuously connected in the horizontal direction of the respective stages A and B. In this multistage connector, the tip sides of the respective stages are staggered by step, and terminal extracting jig inserting holes 6 are arranged in these staggered surfaces X. In the multistage connector where the terminal extracting jig inserting holes 6 are arranged in the surfaces X staggered in this way, when the terminals 1 inserted into the terminal inserting holes 3 are extracted, terminal extracting jigs are inserted from the holes 6, and when lances 2 are pushed down by the terminal extracting jigs, engagement of the lances 2 and the terminals 1 is released, and the terminals 1 can be extracted in such a condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multistage connector used for connecting electric wires in, for example, an automobile.

[0002]

2. Description of the Related Art The structure of a conventional multistage connector is shown in FIG. This multi-stage connector has a structure in which a terminal insertion hole 3 having a lance 2 for locking the terminal 1 therein is formed in two stages A and B in the vertical direction. Although not shown, each stage A,
A plurality of terminal insertion holes 3 are connected in the lateral direction of B.
Such a multi-stage connector is manufactured by injection molding a plastic resin.

A terminal 1 to which an electric wire 5 is connected is inserted into each terminal insertion hole 3 of this multistage connector. Terminal 1 is
A lance locking hole 1A is provided on its lower surface, and
A male terminal fitting portion 1B is provided.

When the terminal 1 is inserted into each terminal insertion hole 3 of the multistage connector, the tip of the terminal 1 is pushed and the tip of the lance 2 escapes downward. As a result, the terminal 1 can be inserted to the tip side of the terminal insertion hole 3.

When the terminal 1 is inserted to the tip side of the terminal insertion hole 3, the tip side of the lance 2 returns to its original state by self-elasticity, and the lance 2 engages with the lance locking hole 1A of the terminal 1. This prevents the terminal 1 from coming out of the terminal insertion hole 3. In FIG. 3, reference numeral 6 is a terminal removal jig insertion hole, 7 is a mating terminal insertion hole, and in this conventional example is a male terminal insertion hole.

[0006] By the way, it is predetermined which terminal wire 1 to which the electric wire 5 is to be inserted is inserted into each of the plurality of terminal insertion holes 3 by mistake. May be inserted into a different terminal insertion hole 3 instead of the regular terminal insertion hole 3.

In such a case, the terminal 1 inserted by mistake
Must be removed from the terminal insertion hole 3 and reinserted into the regular terminal insertion hole 3.

To remove the terminal 1 from the terminal insertion hole 3,
As shown in FIG. 2, the terminal extracting jig 10 is inserted through the terminal extracting jig insertion hole 6, and the tip of the terminal extracting jig 10 is inserted into the lance 2.
The lance 2 is locked to the tip of the lance 2 and the lance 2 is pushed down by the terminal removing jig 10 to release the engagement between the lance 2 and the terminal 1, and the terminal 1 is pulled out in the direction of arrow C in this state. .

[0009]

However, in order to pull out the terminal 1 as described above, the terminal pulling jig insertion hole 6 is formed.
When the terminal extracting jig 10 is inserted from the terminal extracting jig 10, the terminal extracting jig inserting hole 6 and the mating terminal inserting hole 7 are formed close to each other on the same surface, so that the terminal extracting jig 10 is mistakenly inserted into the mating terminal. It may be inserted into the insertion hole 7. Thus, when the terminal extracting jig 10 is inserted into the mating terminal insertion hole, the male terminal fitting portion 1B is damaged by the terminal extracting jig 10 and the terminal 1
There is a problem that can not be used.

In order to prevent the above-mentioned incorrect insertion of the terminal removing jig, it is conceivable to use a multistage connector having a structure as shown in FIG. In this multi-stage connector, the lance 2 formed in the terminal insertion hole 3 of the upper step B is provided on the upper side, the terminal removal jig insertion hole 6 is provided on the upper surface, and the lower step A has the lance 2 shown in FIG. Similar to the above example, the terminal removing jig insertion hole 6 is provided on the lower surface. Since the other points are the same as those in FIG.

With this structure, the position of the terminal removing jig insertion hole 6 can be formed on a surface different from the position of the mating terminal inserting hole 7, so that the wrong insertion of the terminal removing jig can be effectively prevented. However, there is a problem in that it cannot be carried out when the number of stages is three or more.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in a multi-stage connector in which terminal insertion holes having lances therein are formed in multiple stages, the tip side of each stage is stepped. It is characterized in that the terminal removing jig insertion holes are provided on all or a part of the shifted surfaces.

By shifting the tip side of each step of the multi-step connector in a stepwise manner and providing the terminal removal jig insertion holes on all or a part of the shifted surfaces, the terminal removal jig insertion holes can be formed. The position and the position of the mating terminal insertion hole can be formed on different surfaces. Therefore, it is possible to prevent an incorrect insertion of the terminal extracting jig and prevent damage to the terminals. Further, it can be implemented even if the number of stages is three or more.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to FIGS. The multi-stage connector according to the present invention has a structure in which a terminal insertion hole 3 having a lance 2 for locking the terminal 1 therein is formed in two stages A and B in the vertical direction, and although not shown. The point that a plurality of terminal insertion holes 3 are connected in the lateral direction of each step A and B is the same as the multi-step connector shown in FIG. 3, but the multi-step connector according to the present invention has a tip end side of each step. Is characterized in that the terminal removal jig insertion hole 6 is provided in the shifted surface X by shifting the stepwise shape. In FIG. 1, the same parts as those in FIGS. 3 to 5 are designated by the same reference numerals and the description thereof will be omitted.

As described above, in the multistage connector having the terminal removal jig insertion hole 6 on the surface X shifted in a stepwise manner, in order to pull out the terminal 1 inserted into the terminal insertion hole 3 of the multistage connector, As shown in FIG. 4, the terminal removing jig 10 is inserted through the terminal removing jig insertion hole 6,
By pressing down lance 2 with, lance 2 and terminal 1
Is released, and the terminal 1 is pulled out in this state.

In the above embodiment, the two-stage connector has been described, but the present invention can be applied to a connector having three or more stages. That is, when the present invention is applied to, for example, a three-stage multi-stage connector, the tip side of each stage is shifted in a stepwise manner to form faces that are shifted to the first and second stages and the second and third stages, respectively. A terminal removal jig insertion hole may be provided on each of these surfaces. In this case, the terminal removal jig insertion holes are formed only on the first and second displaced surfaces of the displaced surfaces, and as shown in FIG.
You may make it respectively form a terminal extraction jig insertion hole in a lower surface part and an upper surface part. Even in this case, the position of the terminal extraction jig insertion hole and the position of the mating terminal insertion hole can be formed on different surfaces, so that the insertion error of the terminal extraction jig can be prevented. Further, although the present invention is applied to the multi-stage connector accommodating the female terminals in the above-described embodiments, the present invention is also applicable to the multi-stage connector accommodating the male terminals. Further, in the above-described embodiment, only the tip end side of each step is staggered, but the rear end side of each step may be staggered similarly.

[0017]

As described above, in the multi-stage connector according to the present invention, the tip side of each stage is stepwise shifted and the terminal removal jig insertion holes are formed on all or a part of the shifted faces. Since the terminal is inserted, the position of the terminal extraction jig insertion hole can be formed on a surface different from the position of the mating terminal insertion hole. Therefore, it is possible to prevent an incorrect insertion of the terminal extracting jig and prevent damage to the terminals. Further, it can be implemented even if the number of stages is three or more.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a multistage connector according to the present invention.

FIG. 2 is an explanatory view of a state where a terminal is pulled out in the multistage connector of FIG.

FIG. 3 is a sectional view of a conventional multistage connector.

FIG. 4 is an explanatory view of a state where a terminal is pulled out in the multistage connector of FIG.

FIG. 5 is a sectional view showing another embodiment of a conventional multistage connector.

[Explanation of symbols]

 1 terminal 2 lance 3 terminal insertion hole 5 electric wire 6 terminal removal jig insertion hole 7 mating terminal insertion hole 10 terminal removal jig

Claims (1)

[Claims] 1. A multi-stage connector in which a terminal insertion hole having a lance inside is formed in multiple stages, wherein the tip side of each stage is stepwise shifted and all or a part of the shifted faces are provided. A multi-stage connector characterized by having a terminal removal jig insertion hole.